Not bad for the first attempt
Candlemann but the glowing effect gets lost in your composition. The mushroom cap looks very dense and I assume it's hard to get the glowing effect with such a mushroom. I can see some glowing effect behind the stem but not in the front.
I would propose the darken the background a bit more if you've taken different exposures. Then you can play a bit more with the glowing effect in your post-processing.
Have you read my tutorial or have you tried it by yourself?